EP0578326B1 - Suspension with minimum transverse dimension and in particular for low bed vehicles - Google Patents

Suspension with minimum transverse dimension and in particular for low bed vehicles Download PDF

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Publication number
EP0578326B1
EP0578326B1 EP93201987A EP93201987A EP0578326B1 EP 0578326 B1 EP0578326 B1 EP 0578326B1 EP 93201987 A EP93201987 A EP 93201987A EP 93201987 A EP93201987 A EP 93201987A EP 0578326 B1 EP0578326 B1 EP 0578326B1
Authority
EP
European Patent Office
Prior art keywords
suspension
accordance
upper arm
wheel
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93201987A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0578326A1 (en
Inventor
Giancarlo Venturi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SIRMAC OFFICINE MECCANICHE SpA
Original Assignee
SIRMAC OFFICINE MECCANICHE SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SIRMAC OFFICINE MECCANICHE SpA filed Critical SIRMAC OFFICINE MECCANICHE SpA
Publication of EP0578326A1 publication Critical patent/EP0578326A1/en
Application granted granted Critical
Publication of EP0578326B1 publication Critical patent/EP0578326B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G5/00—Resilient suspensions for a set of tandem wheels or axles having interrelated movements
    • B60G5/04—Resilient suspensions for a set of tandem wheels or axles having interrelated movements with two or more pivoted arms, the movements of which are resiliently interrelated, e.g. the arms being rigid
    • B60G5/043—Resilient suspensions for a set of tandem wheels or axles having interrelated movements with two or more pivoted arms, the movements of which are resiliently interrelated, e.g. the arms being rigid the arms being transverse to the longitudinal axis of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
    • B60G11/27—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/32—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds
    • B60G11/48—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds not including leaf springs
    • B60G11/62—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds not including leaf springs having both rubber springs and fluid springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/14—Independent suspensions with lateral arms
    • B60G2200/144—Independent suspensions with lateral arms with two lateral arms forming a parallelogram
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring
    • B60G2202/1524—Pneumatic spring with two air springs per wheel, arranged before and after the wheel axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/20—Type of damper
    • B60G2202/21—Type of damper with two dampers per wheel, arranged before and after the wheel axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/14—Mounting of suspension arms
    • B60G2204/148—Mounting of suspension arms on the unsprung part of the vehicle, e.g. wheel knuckle or rigid axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/10—Constructional features of arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/14—Buses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/38—Low or lowerable bed vehicles

Definitions

  • the general purpose of the present invention is to obviate the above mentioned shortcomings by supplying an innovative suspension in which the transverse dimension of the vehicle is substantially contained in the thickness of the wheel and eliminating the need for large reductions of the useful space between the wheels.
  • Fig. 1 shows a side view of a suspension assembly indicated generally by reference number 10 and provided in accordance with the present invention.
  • the suspension assembly has an articulated quadrilateral and includes two facing side shoulders 11 12 connected to the bed or body 13 of the vehicle and connected above by a beam 14.
  • the shoulders 11 and 12 support between them two superimposed U arms 15 and 16 hinged at the ends of the wings of the U to the shoulders in accordance with respective horizontal axes 17 and 18.
  • the shoulders 11 and 12 are connected to the frame near their lower end so as to permit provision of a low bed vehicle.
  • the horizontal axes are arranged toward the outer part of the frame and the wings of the U are turned opposite the centre line of the vehicle so that between the U arms 15 and 16 (of width greater than the diametrical dimension of the wheel) there is created a space or housing included between the shoulders to receive the wheel 19.
  • Fig. 3 where for the sake of clarity the wheel is removed and its space occupied is indicated by a dot and dash line
  • Fig. 4 between the U arms 15, 16 is arranged and anchored to the end parts of the arms an assembly 20 for support of the axle of the wheel 19.
  • Fig. 3 where for the sake of clarity the wheel is removed and its space occupied is indicated by a dot and dash line
  • the assembly 20 includes a motion input 22 connected to the hub 21 through a known internal gear transmission so as to be shifted downward in relation to the wheel able and permit provision of a lowered bed without interference from the transmission shaft.
  • the hub 21 is substantially of the known art and can support for example a disk brake 23 with clamps 24.
  • the assembly 20 is fixed to the upper arm 15 by a spherical coupling 25 arranged in a vertical plane passing thrugh the wheel hub and to the lower arm 16 by means of a pair of spherical couplings 26, 27 arranged symmetrically in relation to said plane.
  • the upper spherical coupling 25 is fixed to a bracket 28 projecting rearward from the assembly 20 to be inserted in the arm 15, which is in boxed construction, through a lower opening 31.
  • the lower spherical couplings 26, 27 are fixed to L brackets 29, 30 projecting rearward in opposite directions from the assembly 20 to be inserted in the arm 16, which is also in boxed construction, through side openings 32, 33.
  • telescoping shock absorbers 34, 35 which are advantageously inclined and arranged at the sides of the wheel.
  • elastic elements such as for example air springs 36, 37 fixed at the top to the crosspiece by means of supports 42, 43 to be arranged each between one end of the arm 15 and corresponding shock absorber.
  • the suspension can thus pass from the position of Fig. 1 (normal posture) to the end positions shown in Figs. 7 and 8 and representing respectively a full bump position downward and a full bump position upward.
  • Fig. 6 shows a cross section of one of the two air springs, the other being of course identical.
  • the spring contains in its shell 41 a stop element consisting of a buffer 39 supported on the support 42 facing a striker element 40 fixed on the arm 15.
  • a stop element consisting of a buffer 39 supported on the support 42 facing a striker element 40 fixed on the arm 15.
  • Fig. 6 are shown in broken lines the positions of the parts in relation to the full bump position movements of the suspension upward and downward.
  • the rabbet 40 pushes against the buffer 39, deforming it elastically.
  • the supports 42, 43 constitute pistons on which slide the membranes of the respective air springs.
  • the proportions of the parts can change depending on specific constructive and operating requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
EP93201987A 1992-07-10 1993-07-07 Suspension with minimum transverse dimension and in particular for low bed vehicles Expired - Lifetime EP0578326B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI921682 1992-07-10
ITMI921682A IT1255575B (it) 1992-07-10 1992-07-10 Sospensione a minimo ingombro trasversale, in particolare per veicoli a pianale ribassato.

Publications (2)

Publication Number Publication Date
EP0578326A1 EP0578326A1 (en) 1994-01-12
EP0578326B1 true EP0578326B1 (en) 1997-01-22

Family

ID=11363651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93201987A Expired - Lifetime EP0578326B1 (en) 1992-07-10 1993-07-07 Suspension with minimum transverse dimension and in particular for low bed vehicles

Country Status (4)

Country Link
EP (1) EP0578326B1 (it)
DE (1) DE69307610D1 (it)
ES (1) ES2096194T3 (it)
IT (1) IT1255575B (it)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1002596C2 (nl) * 1996-03-13 1997-09-17 Transport Industry Dev Centre Voertuig alsmede wielophanging voor een dergelijk voertuig.
WO2000040431A1 (de) * 1999-01-04 2000-07-13 Otto Sauer Achsenfabrik Keilberg Fahrzeug-achsaufhängung
DE10004227A1 (de) * 2000-02-01 2001-08-02 Bpw Bergische Achsen Kg Radaufhängung für Fahrzeuge, insbesondere Nutzfahrzeuganhänger
US6871723B2 (en) * 2001-04-24 2005-03-29 Meritor Heavy Vehicle Technology, Llc Independent suspension system for a low floor vehicle
US20030184038A1 (en) * 2002-03-27 2003-10-02 Smith Mark C. Semi-independent swing arm suspension system for a low floor vehicle
EP1418068A1 (en) * 2002-11-08 2004-05-12 Terberg Techniek B.V. Vehicle with improved cargo space
DE102007019573A1 (de) * 2007-04-25 2008-10-30 Doll Fahrzeugbau Gmbh Sattelauflieger
CN109050187B (zh) * 2018-10-12 2023-10-20 浙江盘毂动力科技有限公司 商用车、独立悬架结构及悬架支撑臂

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1731962A (en) * 1927-12-08 1929-10-15 James A Wright Rear-axle assembly
US2330482A (en) * 1941-03-26 1943-09-28 Twin Coach Co Vehicle spring suspension
US2404794A (en) * 1943-08-07 1946-07-30 Twin Coach Co Vehicle suspension
US2740622A (en) * 1954-12-30 1956-04-03 Hickman Ind Inc Spring suspension for vehicles
US2920903A (en) * 1956-03-26 1960-01-12 Fruehauf Trailer Co Wheel suspension
FR1239306A (fr) * 1958-02-05 1960-08-26 Mft Fr Pneumatiques Michelin Suspension mixte à ressorts à lames et pneumatique
DE1755017A1 (de) * 1968-03-21 1971-11-18 Kaessbohrer Fahrzeug Karl Achsaufhaengung fuer Lastfahrzeuge oder Omnibusse mit starren Achsen
BE789857A (fr) * 1971-10-13 1973-02-01 Carrozzeria Suspension pneumatique avant a roues independantes pour des autobus et vehicules industriels

Also Published As

Publication number Publication date
EP0578326A1 (en) 1994-01-12
ITMI921682A1 (it) 1994-01-10
ITMI921682A0 (it) 1992-07-10
IT1255575B (it) 1995-11-09
DE69307610D1 (de) 1997-03-06
ES2096194T3 (es) 1997-03-01

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